X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=sshdes.c;h=6906a6581d95073f1491f98fc1e2332851d0887f;hb=d83cd2f79bba111660262af0827296cb76e17040;hp=14ac7f68ae350a1e7441f188c8ffb8a807aa28b4;hpb=6023b6c70ba236956ec1481f6f5d50a4d177bd81;p=PuTTY.git

diff --git a/sshdes.c b/sshdes.c
index 14ac7f68..6906a658 100644
--- a/sshdes.c
+++ b/sshdes.c
@@ -600,18 +600,6 @@ static void des_decipher(word32 * output, word32 L, word32 R,
     output[1] = R;
 }
 
-#define GET_32BIT_MSB_FIRST(cp) \
-  (((unsigned long)(unsigned char)(cp)[3]) | \
-  ((unsigned long)(unsigned char)(cp)[2] << 8) | \
-  ((unsigned long)(unsigned char)(cp)[1] << 16) | \
-  ((unsigned long)(unsigned char)(cp)[0] << 24))
-
-#define PUT_32BIT_MSB_FIRST(cp, value) do { \
-  (cp)[3] = (value); \
-  (cp)[2] = (value) >> 8; \
-  (cp)[1] = (value) >> 16; \
-  (cp)[0] = (value) >> 24; } while (0)
-
 static void des_cbc_encrypt(unsigned char *dest, const unsigned char *src,
 			    unsigned int len, DESContext * sched)
 {
@@ -755,19 +743,19 @@ static void des_sdctr3(unsigned char *dest, const unsigned char *src,
     iv0 = scheds->iv0;
     iv1 = scheds->iv1;
     for (i = 0; i < len; i += 8) {
-	des_encipher(b, iv0, iv1, &scheds[2]);
+	des_encipher(b, iv0, iv1, &scheds[0]);
 	des_decipher(b, b[0], b[1], &scheds[1]);
-	des_encipher(b, b[0], b[1], &scheds[0]);
+	des_encipher(b, b[0], b[1], &scheds[2]);
 	tmp = GET_32BIT_MSB_FIRST(src);
 	PUT_32BIT_MSB_FIRST(dest, tmp ^ b[0]);
 	src += 4;
 	dest += 4;
 	tmp = GET_32BIT_MSB_FIRST(src);
-	PUT_32BIT_MSB_FIRST(dest, tmp ^ b[0]);
+	PUT_32BIT_MSB_FIRST(dest, tmp ^ b[1]);
 	src += 4;
 	dest += 4;
-	if ((iv0 = (iv0 + 1) & 0xffffffff) == 0)
-	    iv1 = (iv1 + 1) & 0xffffffff;
+	if ((iv1 = (iv1 + 1) & 0xffffffff) == 0)
+	    iv0 = (iv0 + 1) & 0xffffffff;
     }
     scheds->iv0 = iv0;
     scheds->iv1 = iv1;
@@ -973,14 +961,14 @@ static const struct ssh2_cipher ssh_3des_ssh2 = {
     des3_make_context, des3_free_context, des3_iv, des3_key,
     des3_ssh2_encrypt_blk, des3_ssh2_decrypt_blk,
     "3des-cbc",
-    8, 168, "triple-DES CBC"
+    8, 168, SSH_CIPHER_IS_CBC, "triple-DES CBC"
 };
 
 static const struct ssh2_cipher ssh_3des_ssh2_ctr = {
     des3_make_context, des3_free_context, des3_iv, des3_key,
     des3_ssh2_sdctr, des3_ssh2_sdctr,
     "3des-ctr",
-    8, 168, "triple-DES SDCTR"
+    8, 168, 0, "triple-DES SDCTR"
 };
 
 /*
@@ -995,24 +983,18 @@ static const struct ssh2_cipher ssh_des_ssh2 = {
     des_make_context, des3_free_context, des3_iv, des_key,
     des_ssh2_encrypt_blk, des_ssh2_decrypt_blk,
     "des-cbc",
-    8, 56, "single-DES CBC"
+    8, 56, SSH_CIPHER_IS_CBC, "single-DES CBC"
 };
 
 static const struct ssh2_cipher ssh_des_sshcom_ssh2 = {
     des_make_context, des3_free_context, des3_iv, des_key,
     des_ssh2_encrypt_blk, des_ssh2_decrypt_blk,
     "des-cbc@ssh.com",
-    8, 56, "single-DES CBC"
+    8, 56, SSH_CIPHER_IS_CBC, "single-DES CBC"
 };
 
-/*
- * "3des-ctr" is disabled because it hasn't had any interoperability
- * testing, which is in turn because I couldn't find another implementation
- * to test against.  Once it's been tested, it can be enabled in standard
- * builds.
- */
 static const struct ssh2_cipher *const des3_list[] = {
-/*  &ssh_3des_ssh2_ctr, */
+    &ssh_3des_ssh2_ctr,
     &ssh_3des_ssh2
 };